Atec Agilent-4284A_4285A - Manual (Page 14)

14
Measurement time Time interval from a trigger command to the EOM
(end of measurement) signal output at the handler
interface port.
Agilent 4284A setting time
Integrated time 100 Hz 1 kHz 10 kHz 1 MHz
Short 270 ms 40 ms 30 ms 30 ms
Medium 400 ms 190 ms 180 ms 180 ms
Long 1040 ms 830 ms 820 ms 820 ms
Agilent 4285A setting time
Integrated time 75 kHz ~ 30 MHz
Short 30 ms
Medium 65 ms
Long 200 ms
Option 4284A/4285A-001: DC bias current output: 100 mA max
Measurement accuracy (Agilent 4284A only)
The following conditions must be met:
1. Warm up time: ≥ 30 minutes
2. Ambient temperature: 23 °C ±5 °C
3. Test signal voltage: 0.3 Vrms to 1 Vrms
4. Test cable length: 0 m
5. Open and short corrections have been performed
6. D
≤ 0.1 for C, L, X and B measurements
Q ≤ 0.1 for R and G measurements
See operation manual for additional conditions.
Accuracies are relative to calibrated standards. Absolute accuracies are given as:
(Agilent 4284A’s relative accuracy +calibration uncertainty of standards).
Accuracy equations
|Z|, |Y|, L, C, R, X, G and B accuracies are given as:
±[A + (K
a
+ K
b
+ K
c
) x 100] (% of reading)
where: 1. A is basic accuracy as shown in figure 1
2. K
a
and K
b
are impedance proportional factors given in Table 2.
The K
a
term is negligible for impedance above 500 Ω.
The K
b
term is negligible for impedances below 500 Ω.
3. K
c
is the calibration interpolation factor given in Table 1.
D accuracy is given as:
±[A
e
/100] (absolute D value)
where: 1. A
e
= [A + (K
a
+ K
b
+ K
c
) x 100]
Q accuracy is given as (when Q
x
x D
e
< 1):
±[(Q
x
2 x D
e
)/(1 ](Q
x
x D
e
)] (absolute Q value)
where: 1. Q
x
is the measured Q value
2. D
e
is the D accuracy
Specifications continued on page 15
Specifications
Continued from page 13